text: #ifndef MBEDTLS_MD5_H_
  #define MBEDTLS_MD5_H_
  #include "third_party/mbedtls/config.h"
  #include "third_party/mbedtls/platform.h"
  COSMOPOLITAN_C_START_
  /* clang-format off */
  
  #define MBEDTLS_ERR_MD5_HW_ACCEL_FAILED -0x002F  /*< MD5 hardware accelerator failed */
  
  /**
   * \brief          MD5 context structure
   *
   * \warning        MD5 is considered a weak message digest and its use
   *                 constitutes a security risk. We recommend considering
   *                 stronger message digests instead.
   *
   */
  typedef struct mbedtls_md5_context
  {
      uint32_t total[2];          /*!< number of bytes processed  */
      uint32_t state[4];          /*!< intermediate digest state  */
      unsigned char buffer[64];   /*!< data block being processed */
  }
  mbedtls_md5_context;
  
  void mbedtls_md5_clone( mbedtls_md5_context *, const mbedtls_md5_context * );
  int mbedtls_md5_starts_ret( mbedtls_md5_context * );
  int mbedtls_md5_update_ret( mbedtls_md5_context *, const unsigned char *, size_t );
  int mbedtls_md5_finish_ret( mbedtls_md5_context *, unsigned char[16] );
  int mbedtls_internal_md5_process( mbedtls_md5_context *, const unsigned char[64] );
  int mbedtls_md5_ret( const void *, size_t, unsigned char[16] );
  int mbedtls_md5_self_test( int );
  
  /**
   * \brief          Initialize MD5 context
   *
   * \param ctx      MD5 context to be initialized
   *
   * \warning        MD5 is considered a weak message digest and its use
   *                 constitutes a security risk. We recommend considering
   *                 stronger message digests instead.
   */
  static inline void mbedtls_md5_init( mbedtls_md5_context *ctx )
  {
      mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
  }
  
  /**
   * \brief          Clear MD5 context
   *
   * \param ctx      MD5 context to be cleared
   *
   * \warning        MD5 is considered a weak message digest and its use
   *                 constitutes a security risk. We recommend considering
   *                 stronger message digests instead.
   */
  static inline void mbedtls_md5_free( mbedtls_md5_context *ctx )
  {
      if( !ctx ) return;
      mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md5_context ) );
  }
  
  COSMOPOLITAN_C_END_
  #endif /* MBEDTLS_MD5_H_ */
  